The Acura TSX is a model of automobile manufactured by Honda and sold in North America under the Acura brand name. The TSX is badge engineered from the Honda Accord sold in Europe and Japan. As of 2003, the TSX is the smallest sedan in the Acura model line, other than the EL sold only in Canada.

The TSX is based on the European and Japanese CL-series Honda Accord. However, the TSX has a restyled interior and different suspension tuning.

The engine, the K24A1, is related to the engine in the Honda Accord (7th generation), the Honda CR-V, the Honda Element, and a smaller version in the Acura RSX and RSX Type-S. The K24A1 features intelligent variable valve timing and produces 200 horsepower (150 kW) in this iteration.

The TSX comes with either a 5-speed sportshift automatic or a 6-speed manual. The manual features a magnesium casing, to reduce weight.

The TSX's suspension setup of a double wishbone front and a multi-link in the rear was especially tuned by the Honda engineers to maximize handling and cornering speed.